[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Mar 24 18:03:36 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 25 Mar, 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: 916706
Prefixes after maximum aggregation (per Origin AS): 347952
Deaggregation factor: 2.63
Unique aggregates announced (without unneeded subnets): 447433
Total ASes present in the Internet Routing Table: 74277
Prefixes per ASN: 12.34
Origin-only ASes present in the Internet Routing Table: 63736
Origin ASes announcing only one prefix: 26191
Transit ASes present in the Internet Routing Table: 10541
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: 55
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 1062
Number of instances of unregistered ASNs: 1081
Number of 32-bit ASNs allocated by the RIRs: 41520
Number of 32-bit ASNs visible in the Routing Table: 34390
Prefixes from 32-bit ASNs in the Routing Table: 168886
Number of bogon 32-bit ASNs visible in the Routing Table: 64
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 504
Number of addresses announced to Internet: 3063124224
Equivalent to 182 /8s, 147 /16s and 145 /24s
Percentage of available address space announced: 82.7
Percentage of allocated address space announced: 82.7
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: 306925
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 242068
Total APNIC prefixes after maximum aggregation: 69187
APNIC Deaggregation factor: 3.50
Prefixes being announced from the APNIC address blocks: 236645
Unique aggregates announced from the APNIC address blocks: 98042
APNIC Region origin ASes present in the Internet Routing Table: 13391
APNIC Prefixes per ASN: 17.67
APNIC Region origin ASes announcing only one prefix: 3931
APNIC Region transit ASes present in the Internet Routing Table: 1800
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 38
Number of APNIC region 32-bit ASNs visible in the Routing Table: 8674
Number of APNIC addresses announced to Internet: 773729408
Equivalent to 46 /8s, 30 /16s and 44 /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: 268307
Total ARIN prefixes after maximum aggregation: 122098
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 270513
Unique aggregates announced from the ARIN address blocks: 130377
ARIN Region origin ASes present in the Internet Routing Table: 19069
ARIN Prefixes per ASN: 14.19
ARIN Region origin ASes announcing only one prefix: 6964
ARIN Region transit ASes present in the Internet Routing Table: 1967
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: 4765
Number of ARIN addresses announced to Internet: 1286019328
Equivalent to 76 /8s, 167 /16s and 25 /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: 258329
Total RIPE prefixes after maximum aggregation: 121641
RIPE Deaggregation factor: 2.12
Prefixes being announced from the RIPE address blocks: 254652
Unique aggregates announced from the RIPE address blocks: 157366
RIPE Region origin ASes present in the Internet Routing Table: 28296
RIPE Prefixes per ASN: 9.00
RIPE Region origin ASes announcing only one prefix: 12048
RIPE Region transit ASes present in the Internet Routing Table: 3961
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 38
Number of RIPE region 32-bit ASNs visible in the Routing Table: 11111
Number of RIPE addresses announced to Internet: 718214272
Equivalent to 42 /8s, 207 /16s and 20 /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: 117659
Total LACNIC prefixes after maximum aggregation: 28455
LACNIC Deaggregation factor: 4.13
Prefixes being announced from the LACNIC address blocks: 116993
Unique aggregates announced from the LACNIC address blocks: 49024
LACNIC Region origin ASes present in the Internet Routing Table: 10965
LACNIC Prefixes per ASN: 10.67
LACNIC Region origin ASes announcing only one prefix: 2641
LACNIC Region transit ASes present in the Internet Routing Table: 2278
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: 8762
Number of LACNIC addresses announced to Internet: 176649984
Equivalent to 10 /8s, 135 /16s and 119 /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: 29281
Total AfriNIC prefixes after maximum aggregation: 5801
AfriNIC Deaggregation factor: 5.05
Prefixes being announced from the AfriNIC address blocks: 37399
Unique aggregates announced from the AfriNIC address blocks: 12219
AfriNIC Region origin ASes present in the Internet Routing Table: 1735
AfriNIC Prefixes per ASN: 21.56
AfriNIC Region origin ASes announcing only one prefix: 607
AfriNIC Region transit ASes present in the Internet Routing Table: 333
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1078
Number of AfriNIC addresses announced to Internet: 108126976
Equivalent to 6 /8s, 113 /16s and 227 /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 9511 8884 51 CHINAMOBILE-CN China Mobile Communicati
7545 5755 786 691 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4867 4192 75 ERX-CERNET-BKB China Education and Rese
7713 3530 1043 65 TELKOMNET-AS-AP PT Telekomunikasi Indon
7552 3454 1331 21 VIETEL-AS-AP Viettel Group, VN
45899 3384 1874 95 VNPT-AS-VN VNPT Corp, VN
9498 2853 491 237 BBIL-AP BHARTI Airtel Ltd., IN
4766 2558 11252 593 KIXS-AS-KR Korea Telecom, KR
24560 2361 837 441 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
45090 2184 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
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 8118 10764 2897 AMAZON-02, US
11492 4534 300 620 CABLEONE, US
7155 3962 279 45 VIASAT-SP-BACKBONE, US
22773 3622 3062 292 ASN-CXA-ALL-CCI-22773-RDC, US
6327 3514 1320 64 SHAW, CA
16625 3157 1590 2338 AKAMAI-AS, US
749 3037 50520 2304 DNIC-AS-00749, US
396982 2624 3588 357 GOOGLE-CLOUD-PLATFORM, US
7018 2553 24117 1559 ATT-INTERNET4, US
30036 2509 361 483 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 7165 1705 149 UNI2-AS, ES
39891 4833 286 59 ALJAWWALSTC-AS, SA
20940 4044 3399 164 AKAMAI-ASN1, NL
8551 3891 370 37 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
12389 2957 2292 913 ROSTELECOM-AS, RU
9009 2664 252 1395 M247, RO
34984 2267 359 612 TELLCOM-AS, TR
6849 2135 339 19 UKRTELNET, UA
58224 1849 949 547 TCI, IR
13188 1607 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 11197 3340 579 Uninet S.A. de C.V., MX
10620 3498 506 850 Telmex Colombia S.A., CO
13999 2295 366 610 Mega Cable, S.A. de C.V., MX
11830 2263 369 64 Instituto Costarricense de Electricidad
28573 1330 2324 246 Claro NXT Telecomunicacoes Ltda, BR
3816 1303 767 159 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
6503 1299 339 514 Axtel, S.A.B. de C.V., MX
6147 1130 370 22 Telefonica del Peru S.A.A., PE
11664 1102 180 454 Techtel LMDS Comunicaciones Interactiva
26615 1030 2498 45 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 1575 393 19 LINKdotNET-AS, EG
24835 1542 533 30 RAYA-AS, EG
36992 1343 1518 275 ETISALAT-MISR, EG
36903 1242 550 99 MT-MPLS, MA
29571 1019 67 53 ORANGE-COTE-IVOIRE, CI
36935 880 520 42 Vodafone-, EG
6713 549 1861 34 IAM-AS, MA
15399 528 54 47 WANANCHI-, KE
37342 493 32 1 MOVITEL, MZ
24757 487 73 5 EthioNet-AS, ET
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 11197 3340 579 Uninet S.A. de C.V., MX
9808 9511 8884 51 CHINAMOBILE-CN China Mobile Communicati
16509 8118 10764 2897 AMAZON-02, US
12479 7165 1705 149 UNI2-AS, ES
7545 5755 786 691 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4867 4192 75 ERX-CERNET-BKB China Education and Rese
39891 4833 286 59 ALJAWWALSTC-AS, SA
11492 4534 300 620 CABLEONE, US
20940 4044 3399 164 AKAMAI-ASN1, NL
7155 3962 279 45 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 9511 9460 CHINAMOBILE-CN China Mobile Communications Grou
12479 7165 7016 UNI2-AS, ES
16509 8118 5221 AMAZON-02, US
7545 5755 5064 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4867 4792 ERX-CERNET-BKB China Education and Research Net
39891 4833 4774 ALJAWWALSTC-AS, SA
7155 3962 3917 VIASAT-SP-BACKBONE, US
11492 4534 3914 CABLEONE, US
20940 4044 3880 AKAMAI-ASN1, NL
8551 3891 3854 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
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
3507 UNALLOCATED 5.105.166.0/24 213035 AS-SERVERION Serverion B.V.,
398083 UNALLOCATED 5.133.124.0/24 399587 UT, 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
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
23.131.185.0/24 Origin: 174 COGENT-174, US
23.131.185.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP
23.131.186.0/24 Origin: 174 COGENT-174, US
23.131.186.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP
23.131.187.0/24 Origin: 174 COGENT-174, US
23.131.187.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP
23.131.188.0/24 Origin: 174 COGENT-174, US
23.131.188.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP
23.136.112.0/24 Origin: 54835 UNASSIGNED
23.136.112.0/24 Transit: 21559 OSNET, PR
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 /10:39 /11:103 /12:299
/13:578 /14:1198 /15:2040 /16:13480 /17:8279 /18:13859
/19:25215 /20:44274 /21:51595 /22:109669 /23:97628 /24:547681
/25:740 /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 6223 7165 UNI2-AS, ES
8151 5163 11197 Uninet S.A. de C.V., MX
39891 3632 4833 ALJAWWALSTC-AS, SA
11492 3442 4534 CABLEONE, US
8551 3363 3891 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
6327 3323 3514 SHAW, CA
7155 3037 3962 VIASAT-SP-BACKBONE, US
22773 2677 3622 ASN-CXA-ALL-CCI-22773-RDC, US
30036 2166 2509 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2052 3498 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1703 2:1230 3:170 4:5 5:4458 6:122
7:6 8:1553 9:1 11:172 12:1577 13:392
14:2315 15:295 16:135 17:368 18:402 20:248
21:4 22:188 23:6138 24:2611 25:6 27:2493
29:19 31:2526 32:101 34:10 35:107 36:1913
37:4637 38:4378 39:807 40:151 41:3987 42:988
43:2332 44:309 45:16497 46:4247 47:377 49:1750
50:1835 51:570 52:1585 54:388 55:766 56:8
57:89 58:1752 59:1130 60:974 61:2440 62:2651
63:1909 64:5672 65:2317 66:4942 67:3016 68:1368
69:4178 70:1257 71:669 72:2972 74:2601 75:1463
76:607 77:2440 78:1861 79:3161 80:2078 81:1738
82:1499 83:1266 84:1538 85:3004 86:744 87:1963
88:1244 89:3625 90:613 91:7690 92:2035 93:2587
94:3581 95:3974 96:1329 97:335 98:1158 99:745
100:73 101:1070 102:2637 103:31162 104:4608 105:483
106:908 107:2557 108:987 109:4402 110:2080 111:3244
112:2055 113:1559 114:1634 115:2023 116:1923 117:2542
118:2278 119:1980 120:1779 121:1113 122:2601 123:2182
124:1619 125:2487 128:1315 129:1073 130:1009 131:2006
132:801 133:421 134:1901 135:300 136:862 137:934
138:2555 139:1526 140:1221 141:1494 142:1441 143:1500
144:1170 145:356 146:1939 147:1568 148:2336 149:1954
150:874 151:1154 152:1842 153:488 154:4280 155:1412
156:1683 157:1280 158:1045 159:2271 160:2537 161:1516
162:3538 163:1505 164:1593 165:1681 166:881 167:1712
168:3880 169:929 170:4610 171:882 172:3523 173:2949
174:1020 175:1160 176:3680 177:4602 178:3640 179:2198
180:2399 181:3424 182:3361 183:1932 184:2350 185:20169
186:4686 187:3975 188:4086 189:3613 190:9150 191:1441
192:10953 193:8847 194:7278 195:5166 196:3099 197:2394
198:5957 199:6096 200:7879 201:5877 202:10753 203:10217
204:4621 205:3542 206:3943 207:3456 208:4081 209:4883
210:4435 211:2497 212:4117 213:3535 214:1083 215:60
216:6610 217:2678 218:1290 219:580 220:2012 221:974
222:888 223:2166
End of report
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