[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri May 6 18:02:48 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 07 May, 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: 897482
Prefixes after maximum aggregation (per Origin AS): 337711
Deaggregation factor: 2.66
Unique aggregates announced (without unneeded subnets): 430691
Total ASes present in the Internet Routing Table: 73091
Prefixes per ASN: 12.28
Origin-only ASes present in the Internet Routing Table: 62741
Origin ASes announcing only one prefix: 25750
Transit ASes present in the Internet Routing Table: 10350
Transit-only ASes present in the Internet Routing Table: 367
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 66
Max AS path prepend of ASN (267602) 58
Prefixes from unregistered ASNs in the Routing Table: 854
Number of instances of unregistered ASNs: 861
Number of 32-bit ASNs allocated by the RIRs: 39312
Number of 32-bit ASNs visible in the Routing Table: 32591
Prefixes from 32-bit ASNs in the Routing Table: 153631
Number of bogon 32-bit ASNs visible in the Routing Table: 23
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 482
Number of addresses announced to Internet: 3067538816
Equivalent to 182 /8s, 214 /16s and 237 /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: 304613
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 235349
Total APNIC prefixes after maximum aggregation: 66645
APNIC Deaggregation factor: 3.53
Prefixes being announced from the APNIC address blocks: 230358
Unique aggregates announced from the APNIC address blocks: 94786
APNIC Region origin ASes present in the Internet Routing Table: 12607
APNIC Prefixes per ASN: 18.27
APNIC Region origin ASes announcing only one prefix: 3589
APNIC Region transit ASes present in the Internet Routing Table: 1729
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 32
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7806
Number of APNIC addresses announced to Internet: 774069504
Equivalent to 46 /8s, 35 /16s and 93 /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: 261514
Total ARIN prefixes after maximum aggregation: 119897
ARIN Deaggregation factor: 2.18
Prefixes being announced from the ARIN address blocks: 261402
Unique aggregates announced from the ARIN address blocks: 124878
ARIN Region origin ASes present in the Internet Routing Table: 19015
ARIN Prefixes per ASN: 13.75
ARIN Region origin ASes announcing only one prefix: 6898
ARIN Region transit ASes present in the Internet Routing Table: 1942
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: 4476
Number of ARIN addresses announced to Internet: 1295461632
Equivalent to 77 /8s, 55 /16s and 45 /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: 257121
Total RIPE prefixes after maximum aggregation: 117453
RIPE Deaggregation factor: 2.19
Prefixes being announced from the RIPE address blocks: 254519
Unique aggregates announced from the RIPE address blocks: 150317
RIPE Region origin ASes present in the Internet Routing Table: 28130
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: 3975
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10688
Number of RIPE addresses announced to Internet: 713885056
Equivalent to 42 /8s, 141 /16s and 5 /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: 114893
Total LACNIC prefixes after maximum aggregation: 27612
LACNIC Deaggregation factor: 4.16
Prefixes being announced from the LACNIC address blocks: 114718
Unique aggregates announced from the LACNIC address blocks: 48579
LACNIC Region origin ASes present in the Internet Routing Table: 10968
LACNIC Prefixes per ASN: 10.46
LACNIC Region origin ASes announcing only one prefix: 2654
LACNIC Region transit ASes present in the Internet Routing Table: 2201
Average LACNIC Region AS path length visible: 4.9
Max LACNIC Region AS path length visible: 66
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8662
Number of LACNIC addresses announced to Internet: 176484096
Equivalent to 10 /8s, 132 /16s and 239 /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: 27751
Total AfriNIC prefixes after maximum aggregation: 5437
AfriNIC Deaggregation factor: 5.10
Prefixes being announced from the AfriNIC address blocks: 36003
Unique aggregates announced from the AfriNIC address blocks: 11713
AfriNIC Region origin ASes present in the Internet Routing Table: 1630
AfriNIC Prefixes per ASN: 22.09
AfriNIC Region origin ASes announcing only one prefix: 562
AfriNIC Region transit ASes present in the Internet Routing Table: 326
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 36
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 959
Number of AfriNIC addresses announced to Internet: 107366400
Equivalent to 6 /8s, 102 /16s and 72 /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 9141 8884 44 CHINAMOBILE-CN China Mobile Communicati
7545 5922 789 697 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4710 4192 75 ERX-CERNET-BKB China Education and Rese
7552 3592 1330 19 VIETEL-AS-AP Viettel Group, VN
7713 3494 1039 53 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3431 1880 56 VNPT-AS-VN VNPT Corp, VN
4766 2495 11121 601 KIXS-AS-KR Korea Telecom, KR
9498 2403 499 239 BBIL-AP BHARTI Airtel Ltd., IN
45090 2169 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2119 438 201 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 6340 10279 2727 AMAZON-02, US
11492 4476 297 694 CABLEONE, US
22773 3934 3075 361 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3901 264 31 VIASAT-SP-BACKBONE, US
16625 3596 1837 2540 AKAMAI-AS, US
6327 3437 1318 62 SHAW, CA
749 2882 50780 2138 DNIC-AS-00749, US
30036 2623 374 130 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2515 4962 424 CENTURYLINK-US-LEGACY-QWEST, US
20115 2251 3051 492 CHARTER-20115, 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 6767 1730 150 UNI2-AS, ES
9121 6715 1692 17 TTNET, TR
8551 4008 374 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
20940 3939 3360 201 AKAMAI-ASN1, NL
39891 3819 220 34 ALJAWWALSTC-AS, SA
12389 2948 2273 909 ROSTELECOM-AS, RU
6849 2907 355 21 UKRTELNET, UA
9009 2493 249 1296 M247, GB
34984 2239 358 633 TELLCOM-AS, TR
47331 2086 328 1598 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 10580 3394 561 Uninet S.A. de C.V., MX
10620 3475 519 738 Telmex Colombia S.A., CO
11830 2433 369 63 Instituto Costarricense de Electricidad
13999 1782 298 469 Mega Cable, S.A. de C.V., MX
6503 1456 355 525 Axtel, S.A.B. de C.V., MX
28573 1401 2333 253 CLARO S.A., BR
3816 1256 669 148 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
6147 1080 369 21 Telefonica del Peru S.A.A., PE
11664 1014 191 443 Techtel LMDS Comunicaciones Interactiva
11172 961 133 63 Alestra, S. de R.L. de C.V., MX
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 1653 393 21 LINKdotNET-AS, EG
24835 1442 501 30 RAYA-AS, EG
36992 1314 1519 263 ETISALAT-MISR, EG
36903 1199 545 114 MT-MPLS, MA
29571 928 65 59 ORANGE-COTE-IVOIRE, CI
36935 619 520 42 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 512 51 33 WANANCHI-, KE
37342 467 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 10580 3394 561 Uninet S.A. de C.V., MX
9808 9141 8884 44 CHINAMOBILE-CN China Mobile Communicati
12479 6767 1730 150 UNI2-AS, ES
9121 6715 1692 17 TTNET, TR
16509 6340 10279 2727 AMAZON-02, US
7545 5922 789 697 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4710 4192 75 ERX-CERNET-BKB China Education and Rese
11492 4476 297 694 CABLEONE, US
8551 4008 374 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
20940 3939 3360 201 AKAMAI-ASN1, NL
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 9141 9097 CHINAMOBILE-CN China Mobile Communications Grou
9121 6715 6698 TTNET, TR
12479 6767 6617 UNI2-AS, ES
7545 5922 5225 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4710 4635 ERX-CERNET-BKB China Education and Research Net
8551 4008 3969 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
7155 3901 3870 VIASAT-SP-BACKBONE, US
39891 3819 3785 ALJAWWALSTC-AS, SA
11492 4476 3782 CABLEONE, US
20940 3939 3738 AKAMAI-ASN1, NL
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
395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US
395056 UNALLOCATED 8.45.133.0/24 3356 LEVEL3, US
32306 UNALLOCATED 8.46.80.0/24 33652 CMCS, 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
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
41.57.124.0/24 Origin: 37442 UNASSIGNED
41.57.124.0/24 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 /12:303
/13:591 /14:1212 /15:2065 /16:13550 /17:8313 /18:13908
/19:25196 /20:43781 /21:52215 /22:108367 /23:95963 /24:531046
/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 5871 6715 TTNET, TR
12479 5748 6767 UNI2-AS, ES
8151 4296 10580 Uninet S.A. de C.V., MX
8551 3474 4008 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
11492 3382 4476 CABLEONE, US
6327 3249 3437 SHAW, CA
39891 3131 3819 ALJAWWALSTC-AS, SA
7155 2991 3901 VIASAT-SP-BACKBONE, US
22773 2936 3934 ASN-CXA-ALL-CCI-22773-RDC, US
6849 2758 2907 UKRTELNET, UA
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1941 2:1033 3:154 4:6 5:3786 6:103
7:5 8:1566 9:1 11:172 12:1708 13:298
14:2386 15:198 16:45 17:385 18:158 20:205
21:4 22:188 23:5645 24:2286 25:6 27:2594
29:19 31:2421 32:96 34:1 35:73 36:1756
37:4416 38:2796 39:700 40:153 41:3973 42:1089
43:2197 44:292 45:16037 46:4137 47:321 49:1702
50:2159 51:100 52:1419 54:365 55:736 56:8
57:59 58:1808 59:1204 60:959 61:2254 62:2508
63:1953 64:5514 65:2320 66:4851 67:2975 68:1190
69:4156 70:1336 71:673 72:3051 74:2647 75:1390
76:585 77:2179 78:3913 79:3108 80:1988 81:1740
82:1494 83:1208 84:1366 85:3659 86:712 87:1959
88:2736 89:3295 90:517 91:7612 92:1996 93:2580
94:3498 95:4769 96:1306 97:349 98:993 99:736
100:75 101:1043 102:2069 103:29069 104:4375 105:462
106:875 107:2540 108:832 109:4205 110:2035 111:3277
112:2029 113:1548 114:1489 115:1975 116:1905 117:2509
118:2329 119:1840 120:1692 121:1073 122:2580 123:2116
124:1588 125:2125 128:1234 129:1104 130:968 131:2051
132:771 133:372 134:1903 135:289 136:882 137:846
138:2451 139:1502 140:854 141:1400 142:1291 143:1448
144:1210 145:343 146:1811 147:1488 148:2224 149:1729
150:844 151:1081 152:1850 153:459 154:3556 155:1417
156:1877 157:1227 158:1042 159:2151 160:2489 161:1267
162:3459 163:1261 164:1638 165:1596 166:710 167:1703
168:3808 169:840 170:4502 171:831 172:3137 173:3099
174:1023 175:1127 176:3519 177:4656 178:3497 179:2016
180:2283 181:2996 182:3253 183:1954 184:2385 185:19433
186:4328 187:3724 188:3866 189:3238 190:8870 191:1323
192:11005 193:8606 194:6996 195:4965 196:2986 197:2419
198:6002 199:6041 200:7492 201:5721 202:10485 203:10037
204:4557 205:3448 206:3772 207:3392 208:4038 209:4663
210:4280 211:2456 212:4036 213:3419 214:1153 215:67
216:6443 217:2664 218:1269 219:571 220:1946 221:979
222:843 223:2149
End of report
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