[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Tue Feb 1 20:10:28 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Tue 01 Feb, 2022
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: 17136
Prefixes after maximum aggregation (per Origin AS): 9824
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 11011
Number of IPv4 prefixes with a valid ROA: 3632
Number of IPv4 prefixes with an invalid ROA: 18
Number of IPv4 prefixes with no ROA: 13486
Total ASes present in the Internet Routing Table: 2640
Prefixes per ASN: 6.49
Origin-only ASes present in the Internet Routing Table: 2281
Origin ASes announcing only one prefix: 1061
Transit ASes present in the Internet Routing Table: 359
Transit-only ASes present in the Internet Routing Table: 53
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 14
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 3
Number of instances of unregistered ASNs: 3
Number of 32-bit ASNs allocated by the RIRs: 38451
Number of 32-bit ASNs visible in the Routing Table: 589
Prefixes from 32-bit ASNs in the Routing Table: 1660
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 196660368
Equivalent to 11 /8s, 184 /16s and 204 /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: 99.5
Total number of prefixes smaller than registry allocations: 1937
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4045
Total APNIC prefixes after maximum aggregation: 2193
APNIC Deaggregation factor: 1.84
Prefixes being announced from the APNIC address blocks: 4046
Unique aggregates announced from the APNIC address blocks: 2595
APNIC Region origin ASes present in the Internet Routing Table: 567
APNIC Prefixes per ASN: 7.14
APNIC Region origin ASes announcing only one prefix: 250
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 222
Number of APNIC addresses announced to Internet: 45147904
Equivalent to 2 /8s, 176 /16s and 231 /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: 7432
Total ARIN prefixes after maximum aggregation: 4131
ARIN Deaggregation factor: 1.80
Prefixes being announced from the ARIN address blocks: 7449
Unique aggregates announced from the ARIN address blocks: 4616
ARIN Region origin ASes present in the Internet Routing Table: 1150
ARIN Prefixes per ASN: 6.48
ARIN Region origin ASes announcing only one prefix: 418
ARIN Region transit ASes present in the Internet Routing Table: 154
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 159
Number of ARIN addresses announced to Internet: 86804848
Equivalent to 5 /8s, 44 /16s and 137 /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: 3413
Total RIPE prefixes after maximum aggregation: 2779
RIPE Deaggregation factor: 1.23
Prefixes being announced from the RIPE address blocks: 3396
Unique aggregates announced from the RIPE address blocks: 2779
RIPE Region origin ASes present in the Internet Routing Table: 674
RIPE Prefixes per ASN: 5.04
RIPE Region origin ASes announcing only one prefix: 318
RIPE Region transit ASes present in the Internet Routing Table: 100
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 135
Number of RIPE addresses announced to Internet: 58013184
Equivalent to 3 /8s, 117 /16s and 54 /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: 1407
Total LACNIC prefixes after maximum aggregation: 555
LACNIC Deaggregation factor: 2.54
Prefixes being announced from the LACNIC address blocks: 1407
Unique aggregates announced from the LACNIC address blocks: 753
LACNIC Region origin ASes present in the Internet Routing Table: 166
LACNIC Prefixes per ASN: 8.48
LACNIC Region origin ASes announcing only one prefix: 69
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64
Number of LACNIC addresses announced to Internet: 4188704
Equivalent to 0 /8s, 63 /16s and 234 /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: 836
Total AfriNIC prefixes after maximum aggregation: 163
AfriNIC Deaggregation factor: 5.13
Prefixes being announced from the AfriNIC address blocks: 836
Unique aggregates announced from the AfriNIC address blocks: 266
AfriNIC Region origin ASes present in the Internet Routing Table: 27
AfriNIC Prefixes per ASN: 30.96
AfriNIC Region origin ASes announcing only one prefix: 6
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2505216
Equivalent to 0 /8s, 38 /16s and 58 /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
2907 570 2156 456 SINET-AS Research Organization of Infor
1237 189 74 135 KREONET-AS-KR KISTI, KR
7575 175 330 122 AARNET-AS-AP Australian Academic and Re
58647 165 18 2 KAGAWAU-AS Kagawa University, JP
55824 130 19 23 NKN-CORE-NW NKN Core Network, IN
4538 112 4160 69 ERX-CERNET-BKB China Education and Rese
4621 80 37 10 UNINET-AS-AP UNINET-, TH
4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
1659 55 1466 35 ERX-TANET-ASN1 Taiwan Academic Network
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
7896 251 51 7 NU-AS, US
376 203 178 152 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
2152 144 507 86 CSUNET-NW, US
18558 136 18 4 NETBLK-RCOEK, US
2920 111 34 6 LACOE, US
21976 85 51 18 NJEDGE-NET, US
1736 80 16 1 MU-AS, US
3 77 496 15 MIT-GATEWAYS, US
3477 74 71 43 NOAA-NWAVE, 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
680 279 1950 245 DFN Verein zur Foerderung eines Deutsch
786 186 1774 183 JANET Jisc Services Limited, GB
8895 143 24 4 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL
137 82 677 77 ASGARR Consortium GARR, IT
553 72 449 72 BELWUE BelWue-Koordination, DE
2200 67 647 61 FR-RENATER Reseau National de telecommu
2614 58 32 55 ROEDUNET, RO
1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol
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 171 207 41 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 94 24 54 Red Universitaria Nacional, CL
1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
19611 45 17 2 Associacao Antonio Vieira - Unisinos, B
4270 44 16 1 Red de Interconexion Universitaria, AR
61468 40 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA
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
2018 349 319 74 TENET-1, ZA
36914 199 82 3 KENET-AS, KE
2561 72 5 31 EUN, EG
8094 50 48 4 PUKNET, ZA
327687 35 28 3 RENU, UG
327700 34 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37182 13 8 1 TERNET, TZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
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 570 2156 456 SINET-AS Research Organization of Infor
2018 349 319 74 TENET-1, ZA
680 279 1950 245 DFN Verein zur Foerderung eines Deutsch
7896 251 51 7 NU-AS, US
376 203 178 152 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
36914 199 82 3 KENET-AS, KE
1237 189 74 135 KREONET-AS-KR KISTI, KR
786 186 1774 183 JANET Jisc Services Limited, GB
7575 175 330 122 AARNET-AS-AP Australian Academic and Re
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 349 275 TENET-1, ZA
7896 251 244 NU-AS, US
5786 200 199 UPRENET, PR
36914 199 196 KENET-AS, KE
58647 165 163 KAGAWAU-AS Kagawa University, JP
8895 143 139 ISU Internet Services Unit ISU, SA
18558 136 132 NETBLK-RCOEK, US
1916 171 130 Rede Nacional de Ensino e Pesquisa, BR
55824 130 107 NKN-CORE-NW NKN Core Network, IN
2920 111 105 LACOE, US
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
22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US
22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US
19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Transit: 20965 GEANT The GEANT IP Service, NL
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 /10:2 /11:1 /12:10
/13:17 /14:31 /15:118 /16:1922 /17:379 /18:422
/19:519 /20:775 /21:819 /22:1333 /23:1386 /24:9320
/25:28 /26:22 /27:30 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 186 199 KENET-AS, KE
8895 138 143 ISU Internet Services Unit ISU, SA
23024 53 56 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
25977 31 45 HCCS, US
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
327700 30 34 MoRENet, MZ
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
32440 29 44 LONI, US
40326 29 33 ECKERD-COLLEGE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:15 8:2 12:1 14:85 18:42
23:9 24:3 31:6 37:6 38:9 40:1
41:113 44:5 45:30 46:6 47:1 49:10
50:1 52:1 59:19 61:3 62:7 63:33
64:46 66:35 67:43 68:8 69:20 71:1
72:10 74:20 76:33 77:7 78:3 79:10
80:16 81:28 82:5 83:6 84:9 85:33
86:4 87:1 88:1 89:10 91:46 92:1
93:19 94:4 95:5 96:5 97:1 98:2
101:4 102:5 103:313 104:14 108:8 109:10
110:3 111:20 112:4 114:23 116:5 117:61
118:32 119:3 121:17 122:8 123:8 125:1
128:81 129:174 130:92 131:87 132:58 133:139
134:94 136:192 137:78 138:8 139:4 140:36
141:2 142:41 143:31 144:52 145:2 146:127
147:57 148:191 149:13 150:40 151:6 152:75
153:11 154:25 155:51 156:67 157:26 158:42
159:19 160:25 161:20 162:19 163:62 164:43
165:55 166:1 167:16 168:109 169:10 170:52
171:1 172:2 173:2 175:30 176:8 177:13
178:1 179:11 180:20 181:1 182:6 184:14
185:39 186:3 187:18 188:13 189:5 190:33
191:33 192:1246 193:246 194:139 195:92 196:146
197:109 198:431 199:240 200:248 201:40 202:566
203:418 204:312 205:164 206:184 207:166 208:59
209:112 210:111 211:13 212:173 213:4 216:86
217:15 218:6 219:7 220:17 222:2
End of report
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