[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Jan 28 18:02:52 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 29 Jan, 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: 887357
Prefixes after maximum aggregation (per Origin AS): 333907
Deaggregation factor: 2.66
Unique aggregates announced (without unneeded subnets): 426824
Total ASes present in the Internet Routing Table: 72715
Prefixes per ASN: 12.20
Origin-only ASes present in the Internet Routing Table: 62389
Origin ASes announcing only one prefix: 25723
Transit ASes present in the Internet Routing Table: 10326
Transit-only ASes present in the Internet Routing Table: 371
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 53
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 909
Number of instances of unregistered ASNs: 912
Number of 32-bit ASNs allocated by the RIRs: 38417
Number of 32-bit ASNs visible in the Routing Table: 31981
Prefixes from 32-bit ASNs in the Routing Table: 148775
Number of bogon 32-bit ASNs visible in the Routing Table: 21
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 546
Number of addresses announced to Internet: 3069057792
Equivalent to 182 /8s, 238 /16s and 27 /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: 99.5
Total number of prefixes smaller than registry allocations: 300224
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 233500
Total APNIC prefixes after maximum aggregation: 65661
APNIC Deaggregation factor: 3.56
Prefixes being announced from the APNIC address blocks: 228240
Unique aggregates announced from the APNIC address blocks: 93955
APNIC Region origin ASes present in the Internet Routing Table: 12316
APNIC Prefixes per ASN: 18.53
APNIC Region origin ASes announcing only one prefix: 3526
APNIC Region transit ASes present in the Internet Routing Table: 1721
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 29
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7502
Number of APNIC addresses announced to Internet: 774614912
Equivalent to 46 /8s, 43 /16s and 175 /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: 258031
Total ARIN prefixes after maximum aggregation: 118815
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 258096
Unique aggregates announced from the ARIN address blocks: 123187
ARIN Region origin ASes present in the Internet Routing Table: 18939
ARIN Prefixes per ASN: 13.63
ARIN Region origin ASes announcing only one prefix: 6852
ARIN Region transit ASes present in the Internet Routing Table: 1952
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4315
Number of ARIN addresses announced to Internet: 1296013056
Equivalent to 77 /8s, 63 /16s and 151 /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: 253075
Total RIPE prefixes after maximum aggregation: 116101
RIPE Deaggregation factor: 2.18
Prefixes being announced from the RIPE address blocks: 249526
Unique aggregates announced from the RIPE address blocks: 148747
RIPE Region origin ASes present in the Internet Routing Table: 28182
RIPE Prefixes per ASN: 8.85
RIPE Region origin ASes announcing only one prefix: 12128
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: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10629
Number of RIPE addresses announced to Internet: 713425280
Equivalent to 42 /8s, 134 /16s and 1 /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: 114313
Total LACNIC prefixes after maximum aggregation: 27288
LACNIC Deaggregation factor: 4.19
Prefixes being announced from the LACNIC address blocks: 115028
Unique aggregates announced from the LACNIC address blocks: 48529
LACNIC Region origin ASes present in the Internet Routing Table: 10935
LACNIC Prefixes per ASN: 10.52
LACNIC Region origin ASes announcing only one prefix: 2670
LACNIC Region transit ASes present in the Internet Routing Table: 2201
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 53
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8617
Number of LACNIC addresses announced to Internet: 176482048
Equivalent to 10 /8s, 132 /16s and 231 /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: 27529
Total AfriNIC prefixes after maximum aggregation: 5357
AfriNIC Deaggregation factor: 5.14
Prefixes being announced from the AfriNIC address blocks: 35921
Unique aggregates announced from the AfriNIC address blocks: 11921
AfriNIC Region origin ASes present in the Internet Routing Table: 1585
AfriNIC Prefixes per ASN: 22.66
AfriNIC Region origin ASes announcing only one prefix: 547
AfriNIC Region transit ASes present in the Internet Routing Table: 309
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 42
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 918
Number of AfriNIC addresses announced to Internet: 108177664
Equivalent to 6 /8s, 114 /16s and 169 /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 9058 8886 46 CHINAMOBILE-CN China Mobile Communicati
7545 5859 788 690 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4682 4192 74 ERX-CERNET-BKB China Education and Rese
7552 3606 1330 20 VIETEL-AS-AP Viettel Group, VN
7713 3480 1038 51 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3433 1880 57 VNPT-AS-VN VNPT Corp, VN
4766 2529 11121 609 KIXS-AS-KR Korea Telecom, KR
9498 2273 475 232 BBIL-AP BHARTI Airtel Ltd., IN
45090 2170 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2118 429 198 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 6158 10142 2617 AMAZON-02, US
11492 4517 299 789 CABLEONE, US
22773 3989 3028 368 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
16625 3662 1890 2566 AKAMAI-AS, US
6327 3360 1318 63 SHAW, CA
749 2887 50780 2143 DNIC-AS-00749, US
30036 2612 374 131 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2506 4962 428 CENTURYLINK-US-LEGACY-QWEST, US
20115 2248 3035 507 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 6789 1718 153 UNI2-AS, ES
9121 6704 1692 17 TTNET, TR
8551 4001 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
20940 3878 3347 210 AKAMAI-ASN1, NL
39891 3274 188 25 ALJAWWALSTC-AS, SA
12389 2956 2290 906 ROSTELECOM-AS, RU
9009 2509 258 1305 M247, GB
34984 2220 357 603 TELLCOM-AS, TR
47331 1963 313 1495 TTNET, TR
58224 1788 927 583 TCI, IR
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 10738 3410 571 Uninet S.A. de C.V., MX
10620 3457 520 705 Telmex Colombia S.A., CO
11830 2458 369 62 Instituto Costarricense de Electricidad
13999 1650 283 468 Mega Cable, S.A. de C.V., MX
6503 1440 354 524 Axtel, S.A.B. de C.V., MX
28573 1399 2328 253 CLARO S.A., BR
3816 1247 658 147 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
26615 1135 2350 139 TIM SA, BR
6147 1094 369 21 Telefonica del Peru S.A.A., PE
11664 1001 191 448 Techtel LMDS Comunicaciones Interactiva
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 1624 393 21 LINKdotNET-AS, EG
24835 1546 515 32 RAYA-AS, EG
36992 1299 1518 262 ETISALAT-MISR, EG
36903 1195 543 114 MT-MPLS, MA
29571 876 63 60 ORANGE-COTE-IVOIRE, CI
36935 736 521 39 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 518 50 33 WANANCHI-, KE
37342 468 32 1 MOVITEL, MZ
23889 428 232 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 10738 3410 571 Uninet S.A. de C.V., MX
9808 9058 8886 46 CHINAMOBILE-CN China Mobile Communicati
12479 6789 1718 153 UNI2-AS, ES
9121 6704 1692 17 TTNET, TR
16509 6158 10142 2617 AMAZON-02, US
7545 5859 788 690 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4682 4192 74 ERX-CERNET-BKB China Education and Rese
11492 4517 299 789 CABLEONE, US
8551 4001 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
22773 3989 3028 368 ASN-CXA-ALL-CCI-22773-RDC, 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 9058 9012 CHINAMOBILE-CN China Mobile Communications Grou
9121 6704 6687 TTNET, TR
12479 6789 6636 UNI2-AS, ES
7545 5859 5169 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4682 4608 ERX-CERNET-BKB China Education and Research Net
8551 4001 3962 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
7155 3951 3921 VIASAT-SP-BACKBONE, US
11492 4517 3728 CABLEONE, US
20940 3878 3668 AKAMAI-ASN1, NL
22773 3989 3621 ASN-CXA-ALL-CCI-22773-RDC, 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
46990 UNALLOCATED 8.5.242.0/23 3356 LEVEL3, 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
32848 UNALLOCATED 8.28.72.0/24 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
23.131.24.0/24 Origin: 62997 RICKEY-S-FRANCIS-JR, US
23.131.24.0/24 Transit: 6939 HURRICANE, US
23.141.0.0/24 Origin: 395350 UNASSIGNED
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US
23.252.160.0/24 Origin: 398968 GROUP-IID-01, US
23.252.160.0/24 Transit: 174 COGENT-174, US
23.252.161.0/24 Origin: 398968 GROUP-IID-01, US
23.252.161.0/24 Transit: 174 COGENT-174, US
23.252.163.0/24 Origin: 398968 GROUP-IID-01, US
23.252.163.0/24 Transit: 174 COGENT-174, US
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 /10:40 /11:102 /12:305
/13:591 /14:1207 /15:2033 /16:13583 /17:8345 /18:13867
/19:25131 /20:43322 /21:51998 /22:108331 /23:95395 /24:522290
/25:788 /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 5879 6704 TTNET, TR
12479 5745 6789 UNI2-AS, ES
8151 4574 10738 Uninet S.A. de C.V., MX
8551 3466 4001 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
11492 3443 4517 CABLEONE, US
6327 3171 3360 SHAW, CA
7155 3041 3951 VIASAT-SP-BACKBONE, US
22773 2981 3989 ASN-CXA-ALL-CCI-22773-RDC, US
39891 2810 3274 ALJAWWALSTC-AS, SA
30036 2267 2612 MEDIACOM-ENTERPRISE-BUSINESS, US
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1918 2:1004 3:153 4:7 5:3719 6:103
7:5 8:1551 9:1 11:172 12:1707 13:408
14:2375 15:154 16:39 17:374 18:131 20:167
21:4 22:188 23:5423 24:2335 25:6 27:2594
29:19 31:2408 32:104 34:1 35:52 36:1731
37:3941 38:2508 39:719 40:149 41:3895 42:1062
43:2082 44:293 45:15996 46:3867 47:303 49:1636
50:1900 51:107 52:1344 54:293 55:733 56:8
57:55 58:1769 59:1142 60:960 61:2261 62:2431
63:1948 64:5352 65:2312 66:4906 67:2925 68:1182
69:4164 70:1343 71:673 72:3063 74:2634 75:1515
76:715 77:2136 78:3810 79:3102 80:1931 81:1660
82:1459 83:1197 84:1323 85:3564 86:706 87:1887
88:2626 89:3135 90:496 91:7518 92:1896 93:2596
94:3245 95:4490 96:1314 97:345 98:993 99:863
100:75 101:1048 102:1916 103:28097 104:4119 105:462
106:848 107:2461 108:761 109:4187 110:2053 111:3259
112:1968 113:1532 114:1533 115:1955 116:1888 117:2503
118:2323 119:1835 120:1669 121:1028 122:2542 123:2114
124:1608 125:2071 128:1354 129:1197 130:918 131:2090
132:758 133:367 134:1940 135:290 136:854 137:855
138:2459 139:1214 140:879 141:1346 142:1249 143:1436
144:1230 145:335 146:1757 147:1479 148:2212 149:1662
150:846 151:1085 152:1819 153:447 154:3698 155:1366
156:1858 157:1220 158:1010 159:2021 160:2388 161:1292
162:3420 163:1206 164:1675 165:1546 166:622 167:1685
168:3672 169:691 170:4311 171:824 172:3016 173:3045
174:1018 175:1127 176:3509 177:4569 178:3034 179:1959
180:2285 181:2857 182:3229 183:1919 184:2400 185:19262
186:4278 187:3577 188:3795 189:3249 190:8910 191:1311
192:11000 193:8511 194:6948 195:4969 196:2916 197:2373
198:5994 199:6003 200:7475 201:5738 202:10463 203:10016
204:4527 205:3391 206:3833 207:3395 208:3995 209:4614
210:4230 211:2453 212:3938 213:3385 214:1156 215:64
216:6362 217:2617 218:1235 219:602 220:1948 221:989
222:858 223:2174
End of report
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