[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Mon Jan 20 20:10:38 UTC 2025
IPv4 R&E Routing Table Report 20:10 GMT Mon 20 Jan, 2025
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 18630
Prefixes after maximum aggregation (per Origin AS): 10363
Deaggregation factor: 1.80
Unique aggregates announced (without unneeded subnets): 11543
Number of IPv4 prefixes with a valid ROA: 7454
Number of IPv4 prefixes with an invalid ROA: 5
Number of IPv4 prefixes with no ROA: 11171
Total ASes present in the Internet Routing Table: 2719
Prefixes per ASN: 6.85
Origin-only ASes present in the Internet Routing Table: 2348
Origin ASes announcing only one prefix: 1051
Transit ASes present in the Internet Routing Table: 371
Transit-only ASes present in the Internet Routing Table: 71
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 46119
Number of 32-bit ASNs visible in the Routing Table: 640
Prefixes from 32-bit ASNs in the Routing Table: 1737
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 196801680
Equivalent to 11 /8s, 186 /16s and 244 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
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: 2360
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4061
Total APNIC prefixes after maximum aggregation: 2139
APNIC Deaggregation factor: 1.90
Prefixes being announced from the APNIC address blocks: 4061
Unique aggregates announced from the APNIC address blocks: 2588
APNIC Region origin ASes present in the Internet Routing Table: 549
APNIC Prefixes per ASN: 7.40
APNIC Region origin ASes announcing only one prefix: 238
APNIC Region transit ASes present in the Internet Routing Table: 55
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 204
Number of APNIC addresses announced to Internet: 44761856
Equivalent to 2 /8s, 171 /16s and 3 /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: 8479
Total ARIN prefixes after maximum aggregation: 4683
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 8491
Unique aggregates announced from the ARIN address blocks: 5152
ARIN Region origin ASes present in the Internet Routing Table: 1257
ARIN Prefixes per ASN: 6.75
ARIN Region origin ASes announcing only one prefix: 454
ARIN Region transit ASes present in the Internet Routing Table: 158
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 210
Number of ARIN addresses announced to Internet: 87070208
Equivalent to 5 /8s, 48 /16s and 150 /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, 393216-402332
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, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 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: 3565
Total RIPE prefixes after maximum aggregation: 2859
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3553
Unique aggregates announced from the RIPE address blocks: 2901
RIPE Region origin ASes present in the Internet Routing Table: 658
RIPE Prefixes per ASN: 5.40
RIPE Region origin ASes announcing only one prefix: 292
RIPE Region transit ASes present in the Internet Routing Table: 108
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 153
Number of RIPE addresses announced to Internet: 58451344
Equivalent to 3 /8s, 123 /16s and 229 /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
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 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: 1400
Total LACNIC prefixes after maximum aggregation: 538
LACNIC Deaggregation factor: 2.60
Prefixes being announced from the LACNIC address blocks: 1399
Unique aggregates announced from the LACNIC address blocks: 712
LACNIC Region origin ASes present in the Internet Routing Table: 157
LACNIC Prefixes per ASN: 8.91
LACNIC Region origin ASes announcing only one prefix: 56
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65
Number of LACNIC addresses announced to Internet: 4204032
Equivalent to 0 /8s, 64 /16s and 38 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + 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: 1124
Total AfriNIC prefixes after maximum aggregation: 143
AfriNIC Deaggregation factor: 7.86
Prefixes being announced from the AfriNIC address blocks: 1124
Unique aggregates announced from the AfriNIC address blocks: 188
AfriNIC Region origin ASes present in the Internet Routing Table: 26
AfriNIC Prefixes per ASN: 43.23
AfriNIC Region origin ASes announcing only one prefix: 11
AfriNIC Region transit ASes present in the Internet Routing Table: 7
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8
Number of AfriNIC addresses announced to Internet: 2313728
Equivalent to 0 /8s, 35 /16s and 78 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 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
2907 626 2202 463 SINET-AS Research Organization of Informa
1237 192 74 146 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 297 115 AARNET-AS-AP Australian Academic and Rese
55824 146 19 20 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 527 507 99 CENIC-2152, US
2920 226 44 49 LACOE, US
668 205 630 174 DNIC-AS-00668, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 140 18 5 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
23024 99 7 17 OCDE, US
21976 90 34 16 NJEDGE-NET, US
237 82 541 48 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 186 1767 183 JANET Jisc Services Limited, GB
8895 131 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 78 29 68 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 159 178 42 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 53 16 1 Red de Interconexion Universitaria, AR
61468 52 5 17 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 546 82 3 KENET-AS, KE
2018 379 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37182 36 8 1 TERNET, TZ
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
36982 8 33 8 UCT, ZA
37654 6 0 5 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 626 2202 463 SINET-AS Research Organization of Informa
36914 546 82 3 KENET-AS, KE
2152 527 507 99 CENIC-2152, US
2018 379 319 71 TENET-1, ZA
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 226 44 49 LACOE, US
668 205 630 174 DNIC-AS-00668, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 192 74 146 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 546 543 KENET-AS, KE
2152 527 428 CENIC-2152, US
2018 379 308 TENET-1, ZA
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 226 177 LACOE, US
18558 140 135 NETBLK-RCOEK, US
55824 146 126 NKN-CORE-NW NKN Core Network, IN
8895 131 126 ISU Internet Services Unit ISU, SA
1916 159 117 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /8:0 /9:1 /10:1 /11:1 /12:11
/13:18 /14:31 /15:114 /16:1949 /17:412 /18:449
/19:549 /20:817 /21:845 /22:1424 /23:1472 /24:10531
/25:3 /26:1 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 522 546 KENET-AS, KE
8895 126 131 ISU Internet Services Unit ISU, SA
2152 62 527 CENIC-2152, US
23024 38 99 OCDE, US
37182 35 36 TERNET, TZ
3267 34 78 NIKS, RU
32440 33 58 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 56 SEAP-AGE, ES
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 6:4 8:2 12:1 14:93
23:8 24:3 31:1 35:3 37:8 38:11
40:1 41:252 42:5 44:4 45:50 46:4
47:1 49:10 50:4 52:1 59:18 61:3
62:8 63:36 64:43 65:5 66:58 67:41
68:13 69:18 70:2 71:1 72:8 74:55
76:38 77:10 78:3 79:10 80:12 81:25
82:7 83:7 84:8 85:45 86:5 87:1
89:10 91:41 92:2 93:13 94:2 95:2
96:5 97:1 98:2 102:3 103:298 104:80
107:2 108:8 109:5 111:20 113:1 114:24
116:9 117:61 118:33 119:1 121:18 122:8
123:8 125:5 128:59 129:37 130:97 131:66
132:64 133:155 134:107 136:198 137:98 138:58
139:5 140:31 141:3 142:40 143:25 144:27
145:2 146:136 147:66 148:199 149:13 150:70
151:9 152:132 153:14 154:34 155:64 156:130
157:26 158:30 159:20 160:33 161:17 162:23
163:64 164:11 165:49 167:26 168:118 169:7
170:101 171:1 172:2 173:7 175:16 177:6
179:13 180:15 181:1 182:11 184:2 185:48
186:3 187:22 188:14 189:3 190:34 191:13
192:1345 193:269 194:132 195:80 196:147 197:331
198:534 199:270 200:268 201:37 202:574 203:438
204:389 205:178 206:214 207:312 208:67 209:162
210:139 211:3 212:165 213:6 214:9 216:93
217:12 218:23 219:6 220:16 222:1 223:11
End of report
More information about the ren-bgp-stats-all
mailing list