[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jun 17 18:02:36 UTC 2022


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 18 Jun, 2022

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              901280
    Prefixes after maximum aggregation (per Origin AS):          339608
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      434407
Total ASes present in the Internet Routing Table:                 73265
    Prefixes per ASN:                                             12.30
Origin-only ASes present in the Internet Routing Table:           62881
Origin ASes announcing only one prefix:                           25823
Transit ASes present in the Internet Routing Table:               10384
Transit-only ASes present in the Internet Routing Table:            373
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      61
    Max AS path prepend of ASN ( 37447)                              57
Prefixes from unregistered ASNs in the Routing Table:               903
    Number of instances of unregistered ASNs:                       911
Number of 32-bit ASNs allocated by the RIRs:                      39608
Number of 32-bit ASNs visible in the Routing Table:               32813
Prefixes from 32-bit ASNs in the Routing Table:                  155659
Number of bogon 32-bit ASNs visible in the Routing Table:            30
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            488
Number of addresses announced to Internet:                   3068947584
    Equivalent to 182 /8s, 236 /16s and 108 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      306299

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   235236
    Total APNIC prefixes after maximum aggregation:               66890
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230512
    Unique aggregates announced from the APNIC address blocks:    95378
APNIC Region origin ASes present in the Internet Routing Table:   12707
    APNIC Prefixes per ASN:                                       18.14
APNIC Region origin ASes announcing only one prefix:               3653
APNIC Region transit ASes present in the Internet Routing Table:   1748
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7922
Number of APNIC addresses announced to Internet:              773640704
    Equivalent to 46 /8s, 28 /16s and 210 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    263453
    Total ARIN prefixes after maximum aggregation:               120608
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           263539
    Unique aggregates announced from the ARIN address blocks:    126882
ARIN Region origin ASes present in the Internet Routing Table:    19046
    ARIN Prefixes per ASN:                                        13.84
ARIN Region origin ASes announcing only one prefix:                6897
ARIN Region transit ASes present in the Internet Routing Table:    1934
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4531
Number of ARIN addresses announced to Internet:              1297249024
    Equivalent to 77 /8s, 82 /16s and 115 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    258597
    Total RIPE prefixes after maximum aggregation:               118188
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           255969
    Unique aggregates announced from the RIPE address blocks:    151443
RIPE Region origin ASes present in the Internet Routing Table:    28138
    RIPE Prefixes per ASN:                                         9.10
RIPE Region origin ASes announcing only one prefix:               12043
RIPE Region transit ASes present in the Internet Routing Table:    3969
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10699
Number of RIPE addresses announced to Internet:               713665664
    Equivalent to 42 /8s, 137 /16s and 172 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  115279
    Total LACNIC prefixes after maximum aggregation:              27717
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         115061
    Unique aggregates announced from the LACNIC address blocks:   48693
LACNIC Region origin ASes present in the Internet Routing Table:  10977
    LACNIC Prefixes per ASN:                                      10.48
LACNIC Region origin ASes announcing only one prefix:              2663
LACNIC Region transit ASes present in the Internet Routing Table:  2237
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        47
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8690
Number of LACNIC addresses announced to Internet:             176466688
    Equivalent to 10 /8s, 132 /16s and 171 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  27812
    Total AfriNIC prefixes after maximum aggregation:              5506
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         35711
    Unique aggregates announced from the AfriNIC address blocks:  11598
AfriNIC Region origin ASes present in the Internet Routing Table:  1647
    AfriNIC Prefixes per ASN:                                     21.68
AfriNIC Region origin ASes announcing only one prefix:              567
AfriNIC Region transit ASes present in the Internet Routing Table:  323
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       61
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  971
Number of AfriNIC addresses announced to Internet:            107644416
    Equivalent to 6 /8s, 106 /16s and 134 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        9230       8880      38  CHINAMOBILE-CN China Mobile Communicati
  7545        5923        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4716       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3560       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3486       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3430       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2493      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2415        499     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2170       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2129        425     217  TATACOMM-AS TATA Communications formerl

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        6655      10378    2719  AMAZON-02, US
 11492        4530        300     652  CABLEONE, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 22773        3888       3067     354  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3454       1801    2513  AKAMAI-AS, US
  6327        3440       1319      63  SHAW, CA
   749        2964      50743    2220  DNIC-AS-00749, US
 30036        2624        374     166  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2475       3342     352  GOOGLE-CLOUD-PLATFORM, US
   209        2435       4961     417  CENTURYLINK-US-LEGACY-QWEST, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6868       1730     143  UNI2-AS, ES
  9121        6746       1692      17  TTNET, TR
 39891        4005        234      45  ALJAWWALSTC-AS, SA
  8551        4001        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3972       3361     205  AKAMAI-ASN1, NL
 12389        2947       2273     908  ROSTELECOM-AS, RU
  6849        2874        355      21  UKRTELNET, UA
  9009        2524        249    1313  M247, GB
 34984        2244        357     633  TELLCOM-AS, TR
 47331        2086        327    1600  TTNET, TR

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10735       3401     552  Uninet S.A. de C.V., MX
 10620        3488        519     740  Telmex Colombia S.A., CO
 11830        2437        369      64  Instituto Costarricense de Electricidad
 13999        1873        306     489  Mega Cable, S.A. de C.V., MX
 28573        1388       2332     273  Claro NXT Telecomunicacoes Ltda, BR
  6503        1369        351     533  Axtel, S.A.B. de C.V., MX
  3816        1259        673     150  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1073        369      21  Telefonica del Peru S.A.A., PE
 11664        1031        192     438  Techtel LMDS Comunicaciones Interactiva
 18881         965       1118      29  TELEFONICA BRASIL S.A, BR

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1600        393      19  LINKdotNET-AS, EG
 24835        1525        521      31  RAYA-AS, EG
 36992        1316       1519     264  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         960         65      64  ORANGE-COTE-IVOIRE, CI
 36935         776        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         519         52      37  WANANCHI-, KE
 37342         464         32       1  MOVITEL, MZ
 23889         423        232      16  MauritiusTelecom, MU

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10735       3401     552  Uninet S.A. de C.V., MX
  9808        9230       8880      38  CHINAMOBILE-CN China Mobile Communicati
 12479        6868       1730     143  UNI2-AS, ES
  9121        6746       1692      17  TTNET, TR
 16509        6655      10378    2719  AMAZON-02, US
  7545        5923        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4716       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4530        300     652  CABLEONE, US
 39891        4005        234      45  ALJAWWALSTC-AS, SA
  8551        4001        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9230         9192  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6746         6729  TTNET, TR
 12479        6868         6725  UNI2-AS, ES
  7545        5923         5229  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4716         4641  ERX-CERNET-BKB China Education and Research Net
  8551        4001         3962  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        4005         3960  ALJAWWALSTC-AS, SA
 16509        6655         3936  AMAZON-02, US
 11492        4530         3878  CABLEONE, US
  7155        3901         3870  VIASAT-SP-BACKBONE, US

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             3356  LEVEL3, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.166.208.0/24      Origin:    398906  LUFTCLOUD-ASN-01, US
23.166.208.0/24     Transit:    132132  REPUBLICTELECOM-SG MyRepublic Ltd., SG
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:41      /11:100     /12:301     
/13:592     /14:1207    /15:2049    /16:13507   /17:8308    /18:13835   
/19:25093   /20:44428   /21:52314   /22:108735  /23:96638   /24:533301  
/25:802     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
  9121        5900        6746  TTNET, TR
 12479        5847        6868  UNI2-AS, ES
  8151        4450       10735  Uninet S.A. de C.V., MX
  8551        3467        4001  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3433        4530  CABLEONE, US
  6327        3250        3440  SHAW, CA
 39891        3189        4005  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2906        3888  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2730        2874  UKRTELNET, UA

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1939      2:1024      3:157       4:6         5:3793      6:108    
   7:6         8:1593      9:1        11:173      12:1648     13:333    
  14:2341     15:211      16:42       17:386      18:174      20:213    
  21:4        22:188      23:5677     24:2376     25:6        27:2613   
  29:19       31:2444     32:95       34:5        35:87       36:1797   
  37:4455     38:3052     39:712      40:153      41:3903     42:1122   
  43:2210     44:291      45:15870    46:4160     47:322      49:1692   
  50:2176     51:236      52:1442     54:381      55:802      56:8      
  57:58       58:1771     59:1163     60:962      61:2272     62:2500   
  63:1943     64:5546     65:2341     66:4867     67:2967     68:1195   
  69:4181     70:1328     71:681      72:3051     74:2652     75:1393   
  76:581      77:2212     78:3917     79:3121     80:1998     81:1754   
  82:1499     83:1213     84:1326     85:3679     86:711      87:1921   
  88:2780     89:3347     90:541      91:7629     92:2017     93:2556   
  94:3455     95:4782     96:1311     97:351      98:1003     99:747    
 100:77      101:1045    102:2125    103:29221   104:4486    105:468    
 106:875     107:2532    108:847     109:4268    110:1993    111:3311   
 112:2042    113:1535    114:1476    115:1958    116:1910    117:2527   
 118:2321    119:1837    120:1700    121:1073    122:2543    123:2094   
 124:1600    125:2114    128:1232    129:1074    130:980     131:2032   
 132:779     133:378     134:1923    135:278     136:876     137:862    
 138:2427    139:1529    140:894     141:1428    142:1291    143:1437   
 144:1208    145:349     146:1825    147:1512    148:2211    149:1748   
 150:859     151:1074    152:1841    153:460     154:3567    155:1439   
 156:1725    157:1243    158:1048    159:2209    160:2541    161:1275   
 162:3462    163:1276    164:1625    165:1612    166:726     167:1722   
 168:3806    169:868     170:4435    171:831     172:3214    173:3137   
 174:1016    175:1130    176:3569    177:4652    178:3553    179:2092   
 180:2295    181:3003    182:3250    183:1957    184:2367    185:19564  
 186:4294    187:3829    188:3932    189:3343    190:8905    191:1352   
 192:11012   193:8620    194:7037    195:4953    196:2943    197:2389   
 198:5986    199:6035    200:7558    201:5839    202:10496   203:10018  
 204:4544    205:3449    206:3755    207:3399    208:4020    209:4700   
 210:4368    211:2433    212:4044    213:3406    214:1143    215:66     
 216:6498    217:2670    218:1293    219:573     220:1944    221:1008   
 222:825     223:2160   

End of report


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