[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 18 18:03:28 UTC 2020


This is an automated weekly mailing describing the state of the Internet
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 http://thyme.rand.apnic.net.

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

Routing Table Report   04:00 +10GMT Sat 19 Dec, 2020

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

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

BGP routing table entries examined:                              834384
    Prefixes after maximum aggregation (per Origin AS):          319639
    Deaggregation factor:                                          2.61
    Unique aggregates announced (without unneeded subnets):      399442
Total ASes present in the Internet Routing Table:                 70165
    Prefixes per ASN:                                             11.89
Origin-only ASes present in the Internet Routing Table:           60316
Origin ASes announcing only one prefix:                           24963
Transit ASes present in the Internet Routing Table:                9849
Transit-only ASes present in the Internet Routing Table:            296
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                     203
    Max AS path prepend of ASN (396896)                             200
Prefixes from unregistered ASNs in the Routing Table:              1041
    Number of instances of unregistered ASNs:                      1042
Number of 32-bit ASNs allocated by the RIRs:                      34457
Number of 32-bit ASNs visible in the Routing Table:               28615
Prefixes from 32-bit ASNs in the Routing Table:                  131766
Number of bogon 32-bit ASNs visible in the Routing Table:            19
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            487
Number of addresses announced to Internet:                   2864080896
    Equivalent to 170 /8s, 182 /16s and 104 /24s
    Percentage of available address space announced:               77.4
    Percentage of allocated address space announced:               77.4
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      283940

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

Prefixes being announced by APNIC Region ASes:                   218271
    Total APNIC prefixes after maximum aggregation:               64342
    APNIC Deaggregation factor:                                    3.39
Prefixes being announced from the APNIC address blocks:          214363
    Unique aggregates announced from the APNIC address blocks:    87510
APNIC Region origin ASes present in the Internet Routing Table:   11125
    APNIC Prefixes per ASN:                                       19.27
APNIC Region origin ASes announcing only one prefix:               3163
APNIC Region transit ASes present in the Internet Routing Table:   1606
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   6259
Number of APNIC addresses announced to Internet:              778351744
    Equivalent to 46 /8s, 100 /16s and 180 /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, 131072-143673
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:                    240878
    Total ARIN prefixes after maximum aggregation:               111543
    ARIN Deaggregation factor:                                     2.16
Prefixes being announced from the ARIN address blocks:           241238
    Unique aggregates announced from the ARIN address blocks:    115495
ARIN Region origin ASes present in the Internet Routing Table:    18688
    ARIN Prefixes per ASN:                                        12.91
ARIN Region origin ASes announcing only one prefix:                6810
ARIN Region transit ASes present in the Internet Routing Table:    1917
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                         203
Number of ARIN region 32-bit ASNs visible in the Routing Table:    3614
Number of ARIN addresses announced to Internet:              1093010176
    Equivalent to 65 /8s, 38 /16s and 3 /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:                    237298
    Total RIPE prefixes after maximum aggregation:               111936
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           233244
    Unique aggregates announced from the RIPE address blocks:    137821
RIPE Region origin ASes present in the Internet Routing Table:    27601
    RIPE Prefixes per ASN:                                         8.45
RIPE Region origin ASes announcing only one prefix:               11876
RIPE Region transit ASes present in the Internet Routing Table:    3889
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:    9766
Number of RIPE addresses announced to Internet:               709745280
    Equivalent to 42 /8s, 77 /16s and 218 /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:                  112152
    Total LACNIC prefixes after maximum aggregation:              26270
    LACNIC Deaggregation factor:                                   4.27
Prefixes being announced from the LACNIC address blocks:         113258
    Unique aggregates announced from the LACNIC address blocks:   47934
LACNIC Region origin ASes present in the Internet Routing Table:  10629
    LACNIC Prefixes per ASN:                                      10.66
LACNIC Region origin ASes announcing only one prefix:              2629
LACNIC Region transit ASes present in the Internet Routing Table:  1991
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        33
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8226
Number of LACNIC addresses announced to Internet:             174119424
    Equivalent to 10 /8s, 96 /16s and 218 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + 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:                  24742
    Total AfriNIC prefixes after maximum aggregation:              4794
    AfriNIC Deaggregation factor:                                  5.16
Prefixes being announced from the AfriNIC address blocks:         31794
    Unique aggregates announced from the AfriNIC address blocks:  10293
AfriNIC Region origin ASes present in the Internet Routing Table:  1424
    AfriNIC Prefixes per ASN:                                     22.33
AfriNIC Region origin ASes announcing only one prefix:              484
AfriNIC Region transit ASes present in the Internet Routing Table:  284
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       29
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  750
Number of AfriNIC addresses announced to Internet:            108424448
    Equivalent to 6 /8s, 118 /16s and 109 /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
  7545        5682        777     661  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4749       4192      73  ERX-CERNET-BKB China Education and Rese
  7552        3548       1330      21  VIETEL-AS-AP Viettel Group, VN
  7713        3232        952     519  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2855       1896      55  VNPT-AS-VN VNPT Corp, VN
  9808        2585       9044      57  CMNET-GD Guangdong Mobile Communication
  4766        2352      11103     560  KIXS-AS-KR Korea Telecom, KR
  9498        2296        466     233  BBIL-AP BHARTI Airtel Ltd., IN
  4755        2133        441     189  TATACOMM-AS TATA Communications formerl
 45090        2067       1045      64  CNNIC-TENCENT-NET-AP Shenzhen Tencent C

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 11492        4755        315     701  CABLEONE, US
 16509        4528       9069    2096  AMAZON-02, US
  7155        4020        264      32  VIASAT-SP-BACKBONE, US
 22773        3769       3008     211  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3357       1319      83  SHAW, CA
 16625        3155       1654    2271  AKAMAI-AS, US
   209        2523       5059     507  CENTURYLINK-US-LEGACY-QWEST, US
 30036        2491        368     113  MEDIACOM-ENTERPRISE-BUSINESS, US
  5650        2336       2984    1643  FRONTIER-FRTR, US
 20115        2163       2898     509  CHARTER-20115, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6214       1667     141  UNI2-AS, ES
 47331        6104        845    3572  TTNET, TR
 39891        3459        195      22  ALJAWWALSTC-AS, SA
 20940        3327       3347     200  AKAMAI-ASN1, NL
  8551        3225        379      43  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2883       2282     892  ROSTELECOM-AS, RU
  9009        2236        231    1220  M247, GB
 34984        2168        352     577  TELLCOM-AS, TR
 13188        1610        100      31  TRIOLAN, UA
 58224        1463        856     550  TCI, IR

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8215       3444     601  Uninet S.A. de C.V., MX
 10620        3394        526     590  Telmex Colombia S.A., CO
 11830        2564        369      63  Instituto Costarricense de Electricidad
 13999        1588        431     406  Mega Cable, S.A. de C.V., MX
  6503        1438        311     475  Axtel, S.A.B. de C.V., MX
  7303        1435        909     262  Telecom Argentina S.A., AR
 28573        1376       2260     222  CLARO S.A., BR
  6147        1146        379      39  Telefonica del Peru S.A.A., PE
  3816        1115        537     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1007        213     419  Techtel LMDS Comunicaciones Interactiva

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1566        393      22  LINKdotNET-AS, EG
 24835        1287        478      26  RAYA-AS, EG
 36992        1218       1530     137  ETISALAT-MISR, EG
 36903         951        497      97  MT-MPLS, MA
 29571         709         68      12  ORANGE-COTE-IVOIRE, CI
  6713         533       1863      34  IAM-AS, MA
 37342         478         32       1  MOVITEL, MZ
 36935         464        522      40  Vodafone-, EG
 23889         451        232      16  MauritiusTelecom, MU
 15399         439         46      16  WANANCHI-, KE

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8215       3444     601  Uninet S.A. de C.V., MX
 12479        6214       1667     141  UNI2-AS, ES
 47331        6104        845    3572  TTNET, TR
  7545        5682        777     661  TPG-INTERNET-AP TPG Telecom Limited, AU
 11492        4755        315     701  CABLEONE, US
  4538        4749       4192      73  ERX-CERNET-BKB China Education and Rese
 16509        4528       9069    2096  AMAZON-02, US
  7155        4020        264      32  VIASAT-SP-BACKBONE, US
 22773        3769       3008     211  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3548       1330      21  VIETEL-AS-AP Viettel Group, VN

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

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

   ASN  No of nets  Net Savings  Description
 12479        6214         6073  UNI2-AS, ES
  7545        5682         5021  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4749         4676  ERX-CERNET-BKB China Education and Research Net
 11492        4755         4054  CABLEONE, US
  7155        4020         3988  VIASAT-SP-BACKBONE, US
 22773        3769         3558  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3548         3527  VIETEL-AS-AP Viettel Group, VN
 39891        3459         3437  ALJAWWALSTC-AS, SA
  6327        3357         3274  SHAW, CA
  8551        3225         3182  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24               174  COGENT-174, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
     32985  UNALLOCATED  8.28.31.0/24              3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24              174  COGENT-174, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
     46766  UNALLOCATED  8.44.208.0/24             3356  LEVEL3, US
     40544  UNALLOCATED  12.0.33.0/24              6461  ZAYO-6461, US
    393489  UNALLOCATED  12.7.109.0/24             7018  ATT-INTERNET4, US

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

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

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
                    Transit:     11426  TWC-11426-CAROLINAS, US
23.142.80.0/24       Origin:      3803  RCN-AS1, US
                    Transit:    398481  REDMERCURY, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
                    Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
27.126.156.0/22      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala
27.126.156.0/23      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala

Complete listing at http://thyme.rand.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        /8:8        /9:13      /10:40      /11:101     /12:292     
/13:579     /14:1175    /15:1931    /16:13469   /17:8273    /18:13705   
/19:25617   /20:41559   /21:50418   /22:103435  /23:87982   /24:484539  
/25:1248    /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
 47331        5362        6104  TTNET, TR
 12479        5185        6214  UNI2-AS, ES
 11492        3805        4755  CABLEONE, US
  6327        3152        3357  SHAW, CA
  7155        3109        4020  VIASAT-SP-BACKBONE, US
  8151        2917        8215  Uninet S.A. de C.V., MX
 22773        2879        3769  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2801        3459  ALJAWWALSTC-AS, SA
  8551        2687        3225  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2224        2491  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1881      2:1139      3:35        4:18        5:3410      6:53     
   8:1487      9:1        11:1        12:1755     13:349      14:2402   
  15:75       16:13       17:303      18:93       20:113      23:4145   
  24:2364     25:3        27:2339     31:2187     32:112      34:1      
  35:35       36:1137     37:3546     38:1999     39:458      40:150    
  41:3851     42:872      43:2114     44:234      45:14610    46:3625   
  47:321      49:1602     50:1678     51:90       52:1127     54:217    
  55:768      56:6        57:57       58:1689     59:1149     60:817    
  61:2312     62:2198     63:2011     64:5220     65:2375     66:5120   
  67:2947     68:1172     69:4100     70:1399     71:685      72:3102   
  74:2548     75:1457     76:688      77:1982     78:3096     79:2485   
  80:1924     81:1632     82:1313     83:1095     84:1261     85:3055   
  86:612      87:1792     88:2339     89:2891     90:400      91:7166   
  92:1597     93:2553     94:2919     95:4109     96:1226     97:342    
  98:966      99:976     100:90      101:1055    102:1215    103:25085  
 104:3620    105:390     106:775     107:2189    108:690     109:3752   
 110:2007    111:2351    112:1661    113:1554    114:1425    115:1855   
 116:1858    117:2111    118:2288    119:1866    120:958     121:1049   
 122:2301    123:2132    124:1639    125:2140    128:1342    129:1258   
 130:766     131:2003    132:743     133:311     134:1392    135:326    
 136:688     137:894     138:2307    139:1167    140:737     141:1165   
 142:1042    143:1242    144:1210    145:341     146:1383    147:1215   
 148:2175    149:1248    150:752     151:1201    152:1609    153:445    
 154:2116    155:1267    156:1353    157:1140    158:907     159:2039   
 160:2049    161:1079    162:3210    163:927     164:1421    165:1315   
 166:599     167:1735    168:3608    169:632     170:4354    171:744    
 172:2025    173:2911    174:973     175:1059    176:2926    177:4428   
 178:2788    179:1891    180:2278    181:2571    182:3161    183:1526   
 184:2406    185:17607   186:4030    187:3075    188:3391    189:2751   
 190:9060    191:1401    192:10596   193:7859    194:6401    195:4583   
 196:3079    197:2269    198:6023    199:5947    200:7325    201:5277   
 202:10554   203:10175   204:4651    205:3102    206:3308    207:3320   
 208:3991    209:4611    210:4199    211:2098    212:3613    213:3183   
 214:1186    215:61      216:6132    217:2476    218:899     219:641    
 220:2085    221:935     222:987     223:1706   

End of report


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