[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jun 30 18:02:11 UTC 2023


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 01 Jul, 2023

  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:                              926783
    Prefixes after maximum aggregation (per Origin AS):          350989
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      451559
Total ASes present in the Internet Routing Table:                 74553
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64022
Origin ASes announcing only one prefix:                           26312
Transit ASes present in the Internet Routing Table:               10531
Transit-only ASes present in the Internet Routing Table:            437
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      79
    Max AS path prepend of ASN ( 37447)                              75
Prefixes from unregistered ASNs in the Routing Table:              1039
    Number of instances of unregistered ASNs:                      1043
Number of 32-bit ASNs allocated by the RIRs:                      42198
Number of 32-bit ASNs visible in the Routing Table:               34769
Prefixes from 32-bit ASNs in the Routing Table:                  173345
Number of bogon 32-bit ASNs visible in the Routing Table:            25
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            557
Number of addresses announced to Internet:                   3054653952
    Equivalent to 182 /8s, 18 /16s and 82 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    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:      309201

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

Prefixes being announced by APNIC Region ASes:                   245979
    Total APNIC prefixes after maximum aggregation:               69770
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          239835
    Unique aggregates announced from the APNIC address blocks:    98665
APNIC Region origin ASes present in the Internet Routing Table:   13484
    APNIC Prefixes per ASN:                                       17.79
APNIC Region origin ASes announcing only one prefix:               3985
APNIC Region transit ASes present in the Internet Routing Table:   1787
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8806
Number of APNIC addresses announced to Internet:              773544576
    Equivalent to 46 /8s, 27 /16s and 90 /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, 131072-153913
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:                    271273
    Total ARIN prefixes after maximum aggregation:               123356
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           273760
    Unique aggregates announced from the ARIN address blocks:    130697
ARIN Region origin ASes present in the Internet Routing Table:    19114
    ARIN Prefixes per ASN:                                        14.32
ARIN Region origin ASes announcing only one prefix:                6987
ARIN Region transit ASes present in the Internet Routing Table:    1956
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4816
Number of ARIN addresses announced to Internet:              1278673152
    Equivalent to 76 /8s, 55 /16s and 1 /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:                    260071
    Total RIPE prefixes after maximum aggregation:               122756
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256523
    Unique aggregates announced from the RIPE address blocks:    159652
RIPE Region origin ASes present in the Internet Routing Table:    28359
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12047
RIPE Region transit ASes present in the Internet Routing Table:    3953
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11230
Number of RIPE addresses announced to Internet:               717425536
    Equivalent to 42 /8s, 195 /16s and 11 /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:                  118844
    Total LACNIC prefixes after maximum aggregation:              28555
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117974
    Unique aggregates announced from the LACNIC address blocks:   49532
LACNIC Region origin ASes present in the Internet Routing Table:  11019
    LACNIC Prefixes per ASN:                                      10.71
LACNIC Region origin ASes announcing only one prefix:              2674
LACNIC Region transit ASes present in the Internet Routing Table:  2301
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8807
Number of LACNIC addresses announced to Internet:             176968192
    Equivalent to 10 /8s, 140 /16s and 82 /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:                  29576
    Total AfriNIC prefixes after maximum aggregation:              5845
    AfriNIC Deaggregation factor:                                  5.06
Prefixes being announced from the AfriNIC address blocks:         38134
    Unique aggregates announced from the AfriNIC address blocks:  12554
AfriNIC Region origin ASes present in the Internet Routing Table:  1760
    AfriNIC Prefixes per ASN:                                     21.67
AfriNIC Region origin ASes announcing only one prefix:              619
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       79
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1110
Number of AfriNIC addresses announced to Internet:            107715840
    Equivalent to 6 /8s, 107 /16s and 157 /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        9524       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5685        784     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4856       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4233        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3553       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3379       1856      96  VNPT-AS-VN VNPT Corp, VN
  7552        3313       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3047        498     252  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2561      11271     592  KIXS-AS-KR Korea Telecom, KR
 24560        2434        837     441  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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        8669      10886    3143  AMAZON-02, US
 11492        4519        300     614  CABLEONE, US
  7155        4170        288      87  VIASAT-SP-BACKBONE, US
 22773        3536       3053     260  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3524       1319      66  SHAW, CA
 16625        3137       1559    2360  AKAMAI-AS, US
   749        3125      54969    2377  DNIC-AS-00749, US
   367        2736       3748    1309  DNIC-ASBLK-00306-00371, US
396982        2670       3594     381  GOOGLE-CLOUD-PLATFORM, US
 30036        2496        360     438  MEDIACOM-ENTERPRISE-BUSINESS, 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        7293       1706     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4091       3398     162  AKAMAI-ASN1, NL
  8551        3465        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2967       2292     912  ROSTELECOM-AS, RU
  9009        2660        247    1383  M247, RO
 34984        2307        361     609  TELLCOM-AS, TR
 58224        1831        946     535  TCI, IR
  6849        1824        307      17  UKRTELNET, UA
 13188        1606        100      27  TRIOLAN, UA

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       11494       3373     591  UNINET, MX
 10620        3529        507     843  Telmex Colombia S.A., CO
 13999        2378        355     627  Mega Cable, S.A. de C.V., MX
 11830        2269        369      64  Instituto Costarricense de Electricidad
 28573        1318       2323     241  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        774     170  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1304        344     511  Axtel, S.A.B. de C.V., MX
  6147        1127        370      22  Telefonica del Peru S.A.A., PE
 11664        1099        177     437  Techtel LMDS Comunicaciones Interactiva
 26615        1038       2500      47  TIM SA, 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        1628        393      19  LINKdotNET-AS, EG
 24835        1548        533      27  RAYA-AS, EG
 36992        1313       1518     282  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1038         67      46  ORANGE-COTE-IVOIRE, CI
 36935         917        520      42  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         534         54      50  WANANCHI-, KE
 24757         495         73       5  EthioNet-AS, ET
 37342         475         32       1  MOVITEL, MZ

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       11494       3373     591  UNINET, MX
  9808        9524       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8669      10886    3143  AMAZON-02, US
 12479        7293       1706     141  UNI2-AS, ES
  7545        5685        784     696  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4856       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4519        300     614  CABLEONE, US
 18403        4233        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4170        288      87  VIASAT-SP-BACKBONE, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        9524         9484  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7293         7152  UNI2-AS, ES
 16509        8669         5526  AMAZON-02, US
  7545        5685         4989  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4856         4781  ERX-CERNET-BKB China Education and Research Net
 18403        4233         4208  FPT-AS-AP FPT Telecom Company, VN
  7155        4170         4083  VIASAT-SP-BACKBONE, US
 20940        4091         3929  AKAMAI-ASN1, NL
 11492        4519         3905  CABLEONE, 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
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     19695  UNALLOCATED  8.20.161.0/24            46887  LIGHTOWER, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
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       /9:14      /10:39      /11:103     /12:299     
/13:578     /14:1199    /15:2072    /16:13477   /17:8268    /18:13859   
/19:25214   /20:44226   /21:51536   /22:110129  /23:98598   /24:556409  
/25:747     /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
 12479        6381        7293  UNI2-AS, ES
  8151        5423       11494  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3428        4519  CABLEONE, US
  6327        3334        3524  SHAW, CA
  7155        3118        4170  VIASAT-SP-BACKBONE, US
  8551        2934        3465  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2606        3536  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2152        2496  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2088        3529  Telmex Colombia S.A., CO

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

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

   1:2200      2:1333      3:224       4:5         5:4528      6:129    
   7:6         8:1552      9:1        11:172      12:1519     13:386    
  14:2320     15:301      16:196      17:373      18:496      20:260    
  21:4        22:188      23:6359     24:2601     25:6        27:2490   
  29:19       31:2513     32:81       34:23       35:114      36:1978   
  37:4691     38:4985     39:828      40:151      41:3943     42:2014   
  43:2343     44:303      45:16621    46:4385     47:373      49:1766   
  50:1872     51:586      52:1596     54:395      55:978      56:8      
  57:119      58:1890     59:1160     60:981      61:2498     62:2677   
  63:1909     64:5605     65:2319     66:5039     67:3065     68:1357   
  69:4124     70:1214     71:688      72:2984     74:2634     75:1565   
  76:613      77:2448     78:1829     79:2984     80:2111     81:1795   
  82:1511     83:1255     84:1558     85:3013     86:749      87:2010   
  88:1184     89:3761     90:614      91:7762     92:2040     93:2610   
  94:3567     95:4057     96:1312     97:341      98:1135     99:736    
 100:94      101:1078    102:2784    103:31653   104:4570    105:504    
 106:894     107:2570    108:1058    109:4225    110:2107    111:3182   
 112:2055    113:1805    114:1645    115:1973    116:1912    117:2533   
 118:2623    119:1986    120:1834    121:1138    122:2619    123:2178   
 124:1619    125:2508    128:1466    129:1058    130:1015    131:1977   
 132:814     133:422     134:1799    135:309     136:887     137:950    
 138:2535    139:1569    140:1250    141:1417    142:1465    143:1507   
 144:1102    145:341     146:1965    147:1590    148:2431    149:2220   
 150:870     151:1161    152:1844    153:494     154:4639    155:1394   
 156:1802    157:1310    158:1086    159:2263    160:2563    161:1518   
 162:3508    163:1566    164:1607    165:1856    166:1089    167:1714   
 168:3862    169:953     170:4611    171:895     172:3633    173:2968   
 174:1083    175:1188    176:3762    177:4518    178:3614    179:2176   
 180:2440    181:3489    182:3438    183:2025    184:2325    185:20411  
 186:4824    187:4039    188:4118    189:3705    190:9242    191:1393   
 192:10914   193:8946    194:7338    195:5147    196:3123    197:2384   
 198:5993    199:6100    200:8003    201:5958    202:10591   203:10142  
 204:4557    205:3718    206:4329    207:3446    208:4137    209:4938   
 210:4478    211:2525    212:4273    213:3623    214:1087    215:59     
 216:6690    217:2764    218:1295    219:582     220:1995    221:963    
 222:856     223:2185   

End of report


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